JP2018519103A - Thermal pad with ring-shaped thermal cell - Google Patents

Abstract

The present invention relates to a thermal product for single treatment and / or self-treatment in the case of acute, recurrent and / or chronic pain conditions having a pyrogenic material arranged in a ring.

Description

  The present invention relates to a thermal product for single treatment and / or self-treatment in the case of acute, recurrent and / or chronic pain conditions having a pyrogenic material arranged in a ring.

  Thermal products for single treatment and / or as self-treatment for acute, recurrent and / or chronic pain conditions in muscles and / or joints in cases of hard intuition, neuralgia, rheumatism, menstrual pain etc. Since the 1990s, user support has been increasing in Europe, North America and Australia, and sales of manufacturers have been constantly increasing. In this regard, a HANSAPLAST Waerme-Therapie Pad (thermotherapy pad) is exemplified.

  The origin of the thermal pad with heat generated by the exothermic reaction is in the Asian region. To date, the only Japanese recognized standard for the definition of test parameters and test methods for self-heating products is the 1996 Japanese Industrial Standard (JIS) S 4100 “Disposable body warmers”. However, the minimum requirements of this standard with respect to the period of use are no longer clearly obsolete, based on market or customer demands.

  In the prior art, exothermic material mixtures have been known for a long time. In this regard, International Publication No. WO201304138 (WO201304138) is exemplified.

  The technical basis of these thermal products is generally the oxidation of the iron powder or finely divided iron shavings contained in the material mixture proceeding through a controlled exothermic reaction, such a material mixture being a carbon powder , Water and salts as electrolytes and ion formers. As a further component of the exothermic material mixture, for example, charcoal chips, wetting agents, flocculating aids, binders, metal salts, organic or inorganic fillers and many other to establish the desired end product properties Material may be included.

  These material mixtures well known to those skilled in the art for releasing heat by controlled exothermic oxidation are used as powders or compressed into granules, agglomerates, beads, pellets or tablets for use in a thermal pad be able to. For use in a thermal pad, the exothermic material mixture is usually segmented and incorporated into a so-called “Wermezellen”.

  These thermal cells are usually formed by a defined amount of exothermic material mixture being completely surrounded by two polymer films bonded together, where at least one polymer film is oxygen permeable by definition. Must.

  The thermal cell may also take the form of a closed tube, hose or pouch. The exothermic material mixture may be added to the thermoforming film and then sealed (e.g. EP 1 782787 (EP 1782787)).

  Within the thermal pad, these thermal cells may in this case be fixed in different sizes, different numbers and different configurations between two carrier substrates bonded together in a laminate, for example by adhesion or fusion. Here, the carrier material adjacent to the oxygen permeable polymer film of the thermal cell must also be oxygen permeable. These carrier substrates may be films, woven fabrics, nonwoven fabrics, gauze, or other carrier substrates suitable for application to the human body.

  In one form of use, the thermal pad is finished to be self-adhesive on the side facing the skin later. For this purpose, a suitable skin-friendly adhesive is applied to the carrier substrate. The adhesive application may be performed on the entire surface or part of the surface, for example, corrugated, dot-like, continuously or intermittently in different grid sizes and forms. In this regard, many different adhesives are known from the prior art as adhesives, for example acrylate adhesives, synthetic rubber adhesives or silicone adhesives.

  For example, for users who are particularly sensitive to adhesives, a thermal pad is placed on the inside of clothing that touches the skin directly, such as a T-shirt or vest, to avoid direct contact of the skin with the adhesive of the thermal pad. It can also be attached. However, in this case, the insulating air cushion that would necessarily exist between the skin and the thermal pad reduces the good heat transfer from the thermal pad to the body.

  Another known method is not to finish the thermal pad to be self-adhesive, but to use the thermal pad, in particular for belts, tubular bandages, bodices, vests or similar fixing aids that are tailored for this purpose. To be attached to the body for use in a pre-made pocket or dent. It is also known to fix a thermal pad using a bandage or a medical adhesive tape (medical tape).

  When using a heating pad as a heating belt, the corresponding heating cell is fixed in a laminate between a carrier substrate facing towards the skin and a carrier substrate facing away from the skin. .

  Since the thermal pad or thermal cell in the thermal belt is activated by contact with atmospheric oxygen, the thermal pad immediately after manufacture must be enclosed in an air impermeable package. At the pre-use stage, the thermal pad is then removed from the package for the first time and an exothermic process (oxidation of iron contained in the exothermic material mixture) is initiated by contact with oxygen.

  According to JIS S 4100, after 30 minutes, heat generation has progressed to the extent that the use temperature on the skin reaches 40 to 45 ° C. Here, the disadvantage of this type of thermal pad is that the powdered material mixture is agglomerated (agglomerated, sintered) with each other over the entire surface during the exothermic process in the thermal cell and hardened before use. This is the situation.

  As a result, the thermal cell is no longer suitable for tracing the changing skin surface contours when the user moves the body, and as a result, the progress of certain movements may be suppressed or hindered There is even. Nonetheless, these hard thermal cells can be annoying to many users even when the progress of the operation is not so hindered.

  Further, such a cured thermal cell ensures that the thermal pad is no longer in full contact with the skin surface during and / or after the user's operation, and thus the full heat output of the healing product is not transmitted to the user. Can lead to

  One means for reducing the unfavorable curing of the thermal pad due to a “curable” thermal cell is disclosed, for example, in DE 67929585 (DE 69729585 T2). The person skilled in the art from this document has replaced a thermal cell, which has been generally large in area and rectangular, with a small area, circular, elliptical or rectangular thermal cell having a specific geometrical arrangement. In some cases, it can be recognized that axes that do not include thermal cells occur in multiple directions across the entire surface of the thermal pad and that these axes can function as joint axes during user movement.

  However, the disadvantage of this solution is that these relatively small thermal cells also agglomerate into a single cured cell.

  The joint shaft, however, has the disadvantage that the area of the thermal cell of the thermal pad must be supported by a rigid or semi-rigid material in order to prevent twisting or wrinkling during application.

  There are special embodiments of thermal pads for specific use purposes. A very common form is a thermal belt for use in the lumbar region, as disclosed, for example, in US Patent Application Publication No. 1996/0777830.

  That is, the object of the present invention was to improve the disadvantages of the prior art and to provide a particularly more resilient thermal pad.

  In accordance with JIS S 4100, the base region containing the thermal cell is not completely adhered to the skin to be treated, for example a thermal product such as a ThermoCare® thermal pad or S-O-S® thermal wrap Similarly, a product or the like that is bonded at only two or three locations generally has a non-adhesive region of a thermal cell attached in the middle when it is operated by the user, and the heat insulating air layer is formed between the product and the skin. Has drawbacks. This will reduce the healing effect of the thermal product, since air is a very good insulator.

  In order to prolong the heat release or to achieve more uniform heat release, the prior art (for example, US 2012/0150268 and US 2005/137465) JP 2005/137465)) is to add a phase change material (PCM) to the exothermic material mixture.

  PCM is a material that can store or release large amounts of energy when it melts or solidifies at a specific temperature. That is, PCM is a latent heat reservoir and is a material suitable for significantly reducing the effects of local overheating that can occur in a thermal cell for use in humans. When the PCM warms, when it reaches a temperature at which the phase changes, for example the melting temperature, it absorbs a large amount of thermal energy at an approximately constant temperature until all the material has melted. When the ambient temperature drops again, the PCM solidifies and releases the stored energy again.

  Suitable materials for PCM for use in a thermal cell are, for example, alkanes having 14 to 30 carbon atoms or mixtures of these alkanes. Corresponding materials and their use are disclosed, for example, in US 2012/0150268 (US 2012/0150268).

  The disadvantage of the described PCM is that they are integrated with the remaining components of the exothermic material mixture of the thermal cell upon melting, and thus agglomerated and hardened overall structure as well.

  The use of microencapsulated PCM for heating and cooling pads is also known from the prior art (eg, US 2003/0109910 (US 2003/0109910) and Canadian Patent Application 2289971 (CA). 2289971)) to the person skilled in the art. However, in the case of known solutions, the microencapsulated PCM is embedded in a solution or gel each time, which must be heated in a microwave or water bath before use. No known exothermic material mixture with a proportion of microencapsulated PCM suitable for a thermal cell is known.

  If the thermal cell is configured as at least two rings arranged concentrically and connected to each other, rather than a single flat structure, for example rectangular, ring-shaped, oval, diamond-shaped, etc. It has been surprising that the rigidity of the “heated” thermal cell can be clearly reduced and the wearing comfort for the user can be clearly increased and was not predictable by those skilled in the art.

  Therefore, the present invention provides a thermal pad comprising one or more thermal cells, wherein the thermal cells have a ring shape.

  The ring shape means, in the sense of the present invention, a cross-line shape in which at least two ring shapes, oval shapes or rectangles arranged concentrically are connected to the object by structural connection.

  FIG. 1 consists of two concentrically arranged rings 2, 3 which extend around a central point 4 and are bridged via connecting parts 5, 6 which are arranged orthogonal to each other. 1 shows a ring-like structure 1 according to the invention. This structural unit is called a crosshair arrangement or a crosshair shape in the sense of the present invention.

  Also, it has not been foreseeable to those skilled in the art that a reduction in stiffness can be achieved by using microencapsulated PCM. This is because the PCM does not integrate with the remaining components of the exothermic material mixture, thereby increasing the mobility of the cell composite.

  Therefore, it is also within the scope of the present invention for a thermal pad according to the present invention to have one or more thermal cells comprising an exothermic material mixture with microencapsulated PCM.

  Encapsulated PCM is commercially available, for example, under the trade name Lurapret® or Micronal® from BASF.

Consists of two concentrically arranged rings 2 and 3 that extend around a central point 4 and are bridged via connecting parts (intersection lines) 5 and 6 that are arranged orthogonally to each other. It is a figure which shows the structure of a cross line shape exemplarily and schematically. It has a thermal cell 8, where the thermal cell 7 has the form of four cross-shaped units 8 ′, 8 ″, 8 ′ ″ and 8 ″ ″ connected to each other. FIG. Two separate thermal cells 10, 11 having a cross-shaped thermal cell 11 in the center are provided, and three cross-shaped thermal cell units 10 ′ connected to each other around the central thermal cell 11. It is a figure which shows illustratively the "triangular" thermal pad 9 in which the thermal cell 10 formed from 10 '', 10 '' 'has spread. It is a figure which shows illustratively the elongate rectangular thermal pad 12 provided with the two thermal cells 13 and 14 of a cross line shape. FIG. 2 exemplarily shows a thermal cell having two rings arranged concentrically in the form of a four-leaf clover connected by lines intersecting at the center.

  The thermal pad according to the present invention may have a self-adhesive coating for direct fixation to the body area to be treated, or may be placed on the body area by an additional fixation aid .

  A concentric ring can relieve the action of force by tension based on its curved geometry. In the case of a ring-like arrangement, at best, the inner circumference of the curved ring is straight or the brittle material is first destroyed between the points of action of two opposing forces acting in opposite directions. Thus, the absolute inner diameter of the ring subjected to the force action determines the reduction in the stiffness of the thermal cell so designed.

  In the case of a ring-shaped thermal cell, in contrast to a flat-shaped thermal cell, which is as small as possible, and thus a large number of separately arranged thermal cells is advantageous for reducing the overall rigidity of the product, The final product stiffness decreases with the size of the thermal cell. Here, the size of the thermal cell can be determined not only by the length of the circumference but also by the number of crosshairs.

  Here, the cross-shaped thermal cell may mean two or more rings arranged concentrically as a basic shape, having different diameters and having a grid structure thereon. In the simplest case, the thermal cell according to the invention has two rings of different sizes arranged concentrically, which are two orthogonal to each other with an intersection at the center of the ring. It is stretched and connected by wires. In the sense of the present invention, a ring also means a closed ring-like structure, for example an oval, a triangle, a rectangle or a variant thereof. Therefore, in the meaning of the present invention, a structure corresponding to the outline of a four-leaf clover is also conceivable (FIG. 5).

  A new and even greater advantage of implementing a thermal cell as a crosshair is the fact that the ring can be moved not only in the x and y axes, but also in the z axis perpendicular to the plane of the crosshairs. is there. This is particularly important for users of correspondingly sophisticated thermal products when the product is used on a part that protrudes from the body during operation, for example on a joint or scapula.

  A self-adhesive or non-self-adhesive thermal product according to the present invention similar to JIS S 4100 includes a cross-shaped thermal cell or any number of individual or connected cross-shaped thermal cells In this case, a single large thermal cell having a cross-shaped constituent unit is formed by connecting two or more cross-shaped thermal cells (FIG. 2). In this case, the cross-shaped thermal cell need not be exactly circular, but may be oval, oval, square or elongated rectangle. Especially for large area thermal products for treatment in the lumbar region of the back, an elongated rectangular crosshair is advantageous.

Base area of the crosshairs-shaped heat cell according to the present ^invention, 0.75cm ^{2 ~1300cm 2,} is preferably ^{3cm 2 ~620cm} 2, particularly preferably 20cm ² ~320cm ^2, most preferably 50cm ² ~250cm ^2, In this regard, it refers only to the area occupied by the exothermic material mixture.

  The width of the ring may be from 0.1 cm to 5 cm, preferably from 0.2 cm to 3 cm, most preferably from 0.25 cm to 2 cm. The widths of the rings in the x- and y-axes of the ring thermal cell projected onto the flat surface may be different as well, and in some cases alternate. This is a good compensation means to obtain a homogeneous user product, especially in the case of a large area elongated rectangular circle or elliptical ring as a thermal cell.

  A special advantage of the cross cell implementation of the thermal cell is that, in contrast to the generally flat thermal cell, a relatively narrow ring / line has a clearly lower resistance to fracture. When power is applied to the thermal cell during use by user action, the ring / line is much easier to follow along the direction of operation than a flat thermal cell due to the smaller width of the material mixture of the oxidation mixture Break. As a result, an articulation line precisely tailored to the user can be formed in the thermal cell, exactly along each maximum operating load.

  The preferred distance between rings or lines within the entire surface of the crosshair arrangement is 0.1 cm to 5 cm, particularly preferably 0.2 cm to 4 cm, most preferably 0.2 cm to 3 cm.

  In all geometric embodiments of the crosshair arrangement, the distance in each configuration can be on the user's skin because the heat radiated from the individual rings / lines provides a uniform thermal feel throughout the treatment area. Should be chosen to overlap as much as possible.

  With regard to their height or thickness, the crosshair arrangement according to the present invention may clearly differ across the ring region. For example, depending on the desired user characteristics, the thickness of the crosshairs may clearly increase or decrease compared to the outer region towards its center point.

  The height or thickness of the crosshair region or ring / line of the thermal cell is 0.05 cm to 1.0 cm, preferably 0.05 cm to 0.7 cm, particularly preferably 0.1 cm to 0.5 cm, most preferably It may vary in the range of 0.1 to 0.3 cm.

  The filling rate of the cruciform thermal cell with the exothermic material mixture is preferably 50% to 100%, particularly preferably 70% to 100%, most preferably 90% to 100% of the maximum filling volume.

  The weight of the cross-shaped thermal cell according to the present invention is preferably 1 g to 400 g, preferably 2 g to 300 g, particularly preferably 4 g to 250 g, and most preferably 4.5 g to 220 g.

  A thermal pad according to the present invention may include one or more cross-shaped thermal cells. Preferably, the thermal pad according to the present invention comprises a plurality of cross-shaped thermal cells, wherein the thermal cells may be connected or woven together.

  The wholly or partially self-adhesive thermal pad is preferably an elongated rectangle with a conically tapered end. The dimensions of the thermal pad are highly dependent on the application site. For example, a thermal pad intended for back heat treatment may be up to 40 cm in length and up to 20 cm in width. The general-purpose thermal pad preferably has a length of 20 cm to 30 cm and a width of 10 cm to 15 cm.

  It may be advantageous to supply different sizes of thermal pads tailored to different heights for the same application site.

  Particularly preferably, these thermal pads are arranged continuously in the longitudinal direction in the same or different configurations with respect to size, shape, length, width, weight and length / distance between rings / lines, most preferably Four cross-shaped thermal cells connected to each other are included (FIG. 2).

  In a further preferred embodiment, this type of thermal pad is made in the shape of a triangle with a concave notch on the side and rounded corners. FIG. 3 exemplarily shows a “triangular” thermal pad with four separate thermal cells, where the center is surrounded by three thermal cells in the shape of a crosshair. There is a cross-shaped thermal cell.

  Preferably, the thermal pad according to the invention comprises a thermal cell having a crosshair geometry at the center in the middle, the crosshair being centered in the direction of the tip of the triangle at the end of each intersection line Each is connected with a further thermal cell in the form of a crosshair (FIG. 3).

  The thermal pad according to the invention in the form of a thermal belt comprises preferably 1 to 8, particularly preferably 2 to 4 cross-shaped thermal cells, optionally partly connected to one another via crossing lines . Here, the thermal cells are preferably distributed on a heat dissipation base region of less than 25 cm × 35 cm, and may be arranged side by side or arranged above and below.

  In the case of a further shape of the reusable thermal belt, one or more non-adhesive thermal pads are placed in suitably pre-made pockets.

  The thermal belt has belt elements on both sides, which are made of a number of materials and forms known to those skilled in the art and can be of different elasticity, with a common fastener system on the longitudinal axis at the end. Preferably, the common fastener system consists of parts of hook-and-loop fasteners, adhesive fasteners, hook fasteners or (snap) fasteners arranged horizontally or vertically with respect to each other.

  The material of the pocket for housing the thermal pad must be sufficiently extensible and elastic to ensure that the thermal pad is securely held.

  Within the thermal pad according to the invention, a cross-shaped thermal cell may preferably be incorporated in a laminate between longitudinally elastic, particularly preferably bielastic carrier materials. When incorporated between longitudinal elastic-only carrier materials, a cruciform thermal cell is placed at its maximum diameter in the direction of carrier material elasticity in order to maximize the stiffness of the final product. It is necessary to keep in mind.

Suitable longitudinal or bielastic carrier materials are commercially available in various forms. For example, Kuempers (Rheine, Germany) has elastic elasticity as a stretch fabric, is made of cotton containing 4% Lycra, has a basis weight of about 180 g / m ² and an elongation exceeding 200% of its initial length. Having dough. Or, for example, an article 016 from KOB (Wolfstein, Germany), a fabric made of 70% viscose and 30% polyamide and having an elongation of 60%.

  Bielastic fabrics are also obtained from KOB, for example, article 023 made of 100% cotton having 85% longitudinal elongation and 40% transverse elongation, or 25-40% longitudinal elongation and> 40% Article 053 made of 100% PET fabric having a lateral elongation of

Further well-suited bielastic materials are obtained, for example, from Innovatec (Troisdorf, Germany), eg thermoplastics having a basis weight of 75 g / m ² and a longitudinal elongation of 300% and a transverse elongation of 330% A polyurethane (TPU) is mentioned.

  Suitable carrier materials for the thermal cell according to the invention may advantageously be heat-insulated on the side facing away from the skin. This at least partial insulation can reduce the release of heat to the surrounding space, thereby conserving exothermic material in the cell and reducing the total weight of the final product. Insulation of the carrier can also occur in various ways, for example by metal foil coating or by incorporating natural residues from coffee husk processing. Products using the latter technique are commercially available, for example under the name NILIT® Heat.

  Of course, each user of the thermal pad has an inherent subjective perception of the amount of heat released each time. The temperature range specified in JIS S 4100 for these products may be felt exactly as different users, and may feel too cold or too hot with many intermediate subtle differences. unknown. One means of taking measures against individual users in this regard is a material that adheres to the surface of the product according to the invention facing away from the skin of the thermal cell complex, with a slightly different adhesion to oxygen, preferably Is to provide a material having oxygen permeability that decreases in the laminated shape from the inside to the outside. If the heat output is insufficient for the user of such a product, the user can remove the outer material layer and more oxygen can reach the exothermic process inside the thermal cell. As a result, the reaction rate and thus the resulting temperature increases, but in this case the total possible use time of the thermal product is correspondingly reduced. By removing further material layers, this process is correspondingly further influenced by the user.

  The described principle can also be applied in the reverse way by correspondingly adding a layer of deposited material with limited oxygen permeability to the thermal product, which is used by the user to reduce the oxygen supply. Is further attached to the outside of the thermal product according to its comfortable temperature, which also reduces the overall temperature and extends the period of use.

  The principles outlined above can be implemented with the same oxygen-permeable material. In this regard, only the additive and subtractive mechanisms of control in the reaction process are then applied.

  A further advantageous means for better utilization or release of the thermal energy of the cell according to the invention is to add phase change material (PCM) to the carrier material, but particularly preferably for the exothermic material mixture. It is to add directly as a component.

  Particularly preferred for use in the exothermic thermal mixture of the crosshair arrangement according to the invention is a capsule having a capsule diameter smaller than the thickness of the crosshair-like thermal cell, preferably 0.5 to 1.5 mm PCM. This capsule retains its outer shape during the temperature change of the PCM, so it does not combine with the hot mixture that reacts and gradually cures, and therefore, based on its size, when force is applied by the user's action, It acts as a joint or pre-determined breakage point that is inherent in the ring / line of the warming part, resulting in an apparent reduction in stiffness when used on the body.

  The disadvantage that the thermal pad, which is not bonded over the entire area, has insufficient heat conduction, is the lens-shaped, semi-convex surface of the thermal conductive polymer on the side facing the skin of the thermal pad in the area of the thermal cell. This can be reduced by applying a layer. This lenticular layer may be circular, oval, elliptical or irregular in terms of area occupancy.

  In this regard, polymer layers made of silicone are preferred, since silicone has very good elastic and heat transfer properties (eg, 0.15-0.32 W / mK silicone resin at room temperature), in particular 15 It also has a relatively good compression behavior of% to 30%. Therefore, a lenticular silicone layer having a thickness of 0.01 cm to 2.5 cm and a diameter of up to 2 cm to 20 cm is completely free of an exothermic thermal cell for optimal heat transfer even when operated by the user. Well-suited to ensure contact with skin. Particularly preferably, this layer is made from a silicone polymer having a Shore A hardness of 50 Shore A or less.

  A thermal pad according to the present invention using a cross-shaped thermal cell may comprise a thermal display. Subjective thermal perception by the user can generally be reduced by a habituation effect with increasing use time, and as a result, is removed by the user as soon as possible before the end of the required treatment time. It is preferable to control visually. Corresponding indicators that allow the temperature to be visualized by a chemical color reaction are known to the person skilled in the art, for example from US 2009/0149925 (US 2009/0149925).

  In the case of a reusable thermal belt that the user replaces with a new one each time a thermal pad containing a thermal cell is used, it may be advantageous to incorporate a thermal indicator into the belt that does not need to be replaced with a new one. .

  It is preferred to apply an active ingredient to assist the treatment to the thermal pad according to the present invention, and this is also within the scope of the present invention. In this case, these active ingredients are incorporated into the corresponding depot on the side facing the skin of the product and are kept until use or in the case of a thermal pad that is self-adhesive. It may also be incorporated in an adhesive matrix (so-called monolithic system).

  The thermal pad according to the present invention includes, for example, an active ingredient for hyperemia treatment (hyperaemisierende Wirkstoffen), for example, an anti-inflammatory agent and / or an analgesic, for example, a natural active ingredient or a synthetic active ingredient of cayenne pepper, such as nonivamid, a nicotinic acid derivative, Preferably, benzyl nicotinate or propyl nicotinate may be applied. Preference is given to capsaicin ([8-methyl-trans-6-nonenoic acid- (4-hydroxy-3-methoxybenzylamide)]), nonivamid, nicotinic acid benzyl ester or benzyl nicotinate.

  Similarly, non-steroidal anti-rheumatic agents such as glycol salicylate, flufenamic acid, ibuprofen, etofenamate, ketoprofen, piroxicam, indomethacin and the like are also suitable as active ingredients. Equally well suited are anti-inflammatory agents such as acetylsalicylic acid, or antipruritic agents such as polidocanol, isoprenaline, crotamiton, or local anesthetics such as lidocaine, benzocaine, and the like.

  It is advantageous to dope the thermal pad according to the invention with active ingredients that have a positive effect on the skin condition. These active ingredients not only provide better skin compatibility of the self-adhesive thermal pad, but can also positively improve the skin appearance in the case of wrinkles, scars or cellulite, for example. Here, bioquinone, particularly ubiquinone Q10, creatine, creatinine, carnitine, acetylcarnitine, biotin, isoflavone and isoflavonoid, genistein, arctiin, cardiolipin, lipoic acid, antifreeze protein, hop extract and hop are particularly preferred active ingredients. Examples include malt extracts and / or substances that promote remodeling of connective tissue, as well as isoflavonoids and isoflavonoid-containing plant extracts such as soy extract and clover extract. In the case of dry skin, active ingredients for assisting skin function such as vitamin C, biotin, carnitine, creatine, creatinine, propionic acid, glycerin, green tea extract, urea and the like are also possible.

  Furthermore, in order to assist aromatherapy as an active ingredient, for example, when using the thermal pad according to the present invention in dysmenorrhea, an essential oil can be used. Here, the essential oil can be incorporated not only into the carrier base material facing towards the skin but also into the carrier base material particularly suitable for reaction with the skin. Particularly preferably, the active ingredient is present in encapsulated form.

  Essential oils mean concentrates obtained from plants, which are mainly used as natural raw materials in the perfume and food industries and which consist of more or less volatile compounds. Examples of these compounds include 1,8-cineole, limonene, menthol, borneol and camphor. The term “essential oil” is often used for volatile components still contained in plants. However, in the actual sense, essential oil means a mixture of volatile components produced from plant raw material by steam distillation.

  Essential oils generally consist only of volatile components having a boiling point of 150-300 ° C. They mainly contain hydrocarbons or monofunctional compounds such as aldehydes, alcohols, esters, ethers and ketones. The parent compounds are monoterpenes and sesquiterpenes, phenylpropane derivatives and long chain aliphatic compounds.

  In the case of some essential oils, eugenol is present in clove oil in more than 85% of one major component, whereas other essential oils are mixtures of complex compositions of individual components. is there. Sensory stimulation properties are often formed by secondary or minor components, such as 1,3,5-undecatriene and pyrazine in galvanum oil, rather than the main component. In the case of many commercially important essential oils, the number of components identified is in the hundreds. A very large number of components are chiral, where one enantiomer is predominant, such as (-)-menthol in peppermint oil or (-)-linalyl acetate in lavender oil, or Very often exists exclusively.

  Preferred essential oils include eucalyptus oil (Oleum Eucalypti), peppermint oil (Oleum Menthae piperitae), camphor oil (Oleum camphoratum), rosemary oil (Oleum Rosmarini), thyme oil (Oleum Thymi), siberian pine oil (Oleum Pini sibricum) and Mention may be made of European pine oil (Oleum Pini silverstris) and terpenes 1,8-Cineol and Levomethanol.

  1 Thermal pad, 2, 3 Cross-shaped ring, 4 Centered point, 5, 6 Connection, 7 Thermal pad, 8 Thermal cell, 8 ', 8' ', 8' '', 8 '' ' 'Cross-linear unit, 9 thermal pad, 10,11 thermal cell, 10', 10 '', 10 '' 'Cross-linear thermal cell unit, 12 thermal pad, 13,14 Cross-linear thermal cell

Claims (13)

  A thermal pad comprising one or more thermal cells, wherein at least one of the thermal cells has the form of at least two rings arranged concentrically and connected to each other via lines. And a thermal pad.   The thermal pad according to claim 1, wherein at least one thermal cell has a cross-hair shape.   The thermal pad according to claim 1, wherein an adhesive layer is at least partially applied to the surface.   The thermal cell contains an exothermic material mixture, wherein a defined amount of the exothermic material mixture is completely surrounded by two polymer films bonded together, at least one of the polymer films The thermal pad according to any one of claims 1 to 3, characterized in that is oxygen permeable.   The thermal cell contains an exothermic material mixture, wherein a specified amount of the exothermic material mixture is enclosed in a tube or hose, and the tube or hose is made of an oxygen permeable material. The thermal pad according to any one of claims 1 to 3, wherein the thermal pad is characterized by the following.   The thermal cell contains an exothermic material mixture, and the exothermic material mixture contains at least iron powder and carbon powder in addition to other components. The thermal pad according to any one of the above.   A thermal belt having at least one thermal pad according to any one of claims 1 to 6, wherein the thermal pad is attached to the longitudinal axis by a belt element having a corresponding fastener system at the end, Thermal belt, characterized in that it allows a hose-like or body-covering connection.   The thermal belt according to claim 7, wherein the thermal cell is replaceable.   The thermal pad has a concave cut at the side and a rounded triangular shape at the corner, and the thermal pad has at least four ring-shaped thermal cells. The thermal pad according to any one of claims 1 to 8, characterized in that.   The thermal pad has an elongated rectangular shape, wherein the thermal pad has at least two ring-shaped thermal cells arranged continuously in a longitudinal direction. Item 10. The thermal pad according to any one of Items 1 to 9.   The thermal pad according to claim 9 or 10, wherein the ring-shaped thermal cells are formed as cross lines connected to each other.   12. A thermal pad according to any one of claims 1 to 11, characterized in that the exothermic material mixture has microencapsulated PCM in at least one thermal cell.   13. A lens-like, semi-convex layer made of a thermally conductive polymer is applied on the side of the thermal cell facing the skin of the thermal cell. The thermal pad according to any one of the above.

Images